Questions tagged [image-sensor]
A semiconductor device which when placed behind a lens and has an image formed on it's surface spatially and temporally samples the charge generated from the incident light. These samples form an internal representation of the incident light. Types of image sensors that are common are CCDs, CIS (Contact Image sensors), APS (Active Pixel devices) and CIS (CMOS Image Sensors)
118 questions
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Image sensor specifications
I'm learning about light exposure for astrophotography and I was reading an image sensor datasheet. The datasheet informs a sensitivity of 1300 mV and the unit confused me. Is it the voltage at each ...
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1 vote
1 answer
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MIPI D-PHY Image sensor with SoC
I am using this image sensor and interfacing with FPGA (Zynq 7010). I understand what needs to be terminated on FPGA side and I understand what I/O is supported such as LVCMOS18_F_8_HP, ...
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-1 votes
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The output format is YUV 4:2:0 for the camera OV5642
I cannot figure out the output data format YUV 4:2:0 for the OV5642 camera. The documentation datasheet OV5642 on page 99 states that one of the possible output sequences is YYYY.../ YUVV.... But how ...
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11 votes
3 answers
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How can jitter be higher than the clock period?
I'm trying to figure out if I could use an oscillator IC for this AR0134CS image sensor or if I need a crystal oscillator circuit, keeping in mind the signal will go through a PLL in a microcontroller ...
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3 votes
2 answers
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Should each power supply pin on an image-sensor have its own source?
I'm designing the power supply part of a little camera module using the AR0134CS sensor. When using the iLCC Package it has these power supply pins: VDD_IO (2.8V) VDD (1.8V) VDD_PLL (2.8V) VAA (2.8V) ...
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-1 votes
1 answer
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Choosing decimal places in sensor measurements [closed]
I have an exercise in which I am asked to compare the temperature detected by a thermal imaging camera on some foods with those detected by a thermocouple inserted under the surface of the food. For ...
1 vote
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Identify Regulator from Canon Camera CMOS Board
I'm trying to Identify 3 Regulators from a Canon Camera CMOS Board The only hint I have is L814, A1BE5, LA42 But I don't know how to find the actual reference of the parts, I need them to repair my ...
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1 vote
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How to view raw image of Image Sensor like OV5640?
I'm using the OV5640 image sensor with an FPGA in JPEG mode with 720p 30 fps. Currently, I can send images via Ethernet and view them on my PC. Now, I want to capture raw RGB images directly from the ...
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1 vote
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Strange behaviour of the gain register on image sensor OV7251 (with graphs!)
I am working with the OV7251 image sensor from Omnivision (sorry, the datasheet is not public, so I can't link to it). According to the datasheet, the gain and exposure can be set. The datasheet ...
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2 votes
1 answer
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How hard is it to DIY soldering (reflow smt) a image sensor\silicon die to FFC cable?
I have a need of a rapid prototype of a image sensor and rolling my own image sensor die. For example, what if I wanted to mount an AR0130cs sensor to an FFC? I don't care about dust or contamination, ...
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2 votes
4 answers
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Image Sensors Tint Issue
I have a problem about color CMOS analog NTSC image sensor. I use OV7955 image sensor and I connected to the monitor. Monitor displays like this: I tried anathor lens and view doesn't change. I ...
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Are same row pixels exposed simultaneously for rolling shutter sensor in ERS mode?
I know that each pixel row in a rolling shutter sensor running in ERS mode (Electronic Rolling Shutter) are exposed for the same duration but at different points in time. But what about each pixel in ...
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Horizontal Blanking Interval (Idling Time) optimization
I have questions regarding the time slot in-between two frames of video stream, i.e. Horizontal Blanking Interval (let's say HBI in the following), seen as Idling Time sometimes. Considering a CMOS ...
1 vote
0 answers
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Different Vertical and Horizontal full well capacities for CCD image sensors
I want to use a line sensor for a medical imaging application. I understand that the full well capacity of the pixel is the maximum number of photo-electrons it can store before it gets saturated. I ...
2 votes
0 answers
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S11108 Circuit Design Logic
This is my first post and also my first dip into electrical engineering, and I wanted to ask if you have any suggestions on the circuit I have designed. As a background, I'm a Computer Science student,...
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